JP3508713B2 - Demolding method for sanitary ware molded article, demolding apparatus used for the method, and receiving mold for demolding - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a demolding method for sanitary ware, a demolding device used therefor, and a demolding receiver, and more particularly to a sanitary ware formed by a horizontal press type pressure casting method. The present invention relates to a demolding method, a demolding device used therefor, and a demolding receiving tochi.

[0002]

2. Description of the Related Art In general, sludge casting is widely used as a method of forming a molded body of sanitary ware such as a toilet bowl, a tank for a toilet bowl, a urinal, a washbasin, and a hand basin. In this sludge cast molding, in addition to the molding method using the gypsum mold that has been used conventionally, a mold with forced drainage of water is used to shorten the molding cycle time, and the sludge is pressed into the mold. A pressure casting method in which water in slurry is forcibly discharged after being cast in a state is preferably used.

As an example of this pressure cast molding method, the present applicant has omitted in Japanese Patent Laid-Open No. 1-222901 the time and effort required for clamping and opening the molding dies one by one and the apparatus required therefor. We propose a molding method using a horizontal press type pressure molding machine. FIG. 1 shows the schematic view of a horizontal press type pressure molding machine. This molding method consists of arranging a plurality of molds in a horizontal direction with the mold dividing surfaces of the molds facing vertically, and then clamping and pressurizing them all at once, and in that state, insert slurry into the casting space of each mold. By casting, a plurality of molded bodies can be obtained at the same time.

However, in this molding method, since it is necessary to remove the molded body from the molding die in the horizontal direction, it is practically difficult to utilize the natural demolding in the direction of gravity unlike the vertical press type molding machine. is there. As a result, it is difficult to automate the demolding, and there has been a problem in the prior art in that manual handling is required. To solve this problem, Japanese Patent Application Laid-Open No. 7-60729 proposes a method of demolding and finishing the sanitary ware molding by suction-holding the bottom rear surface of the molding with a robot arm.

[0005]

However, the above-mentioned Japanese Patent Laid-Open No. 7-
The robot arm type automatic demolding device disclosed in Japanese Patent No. 60729 still has some problems to be solved. One is that since the shape of the molded body suction part attached to the tip of the robot arm is constant, the suction part needs to be replaced each time a molded body with a different shape is mixedly mounted on the molding machine. Secondly, if the bottom of the molded body is adsorbed by the molded body suction part attached to the tip of the robot arm, there is no choice but to hold the part other than the bottom when placing it on the demolding receiving Tochi, If you want to hold the bottom of the compact, we cannot do it. Thirdly, if a robot arm is used, a large robot with a large load capacity is required to support a large, heavy-weight molded body, resulting in poor investment efficiency and space efficiency. Fourthly, when multiple molding dies are mounted on the molding machine, the demolding position moves, so the robot arm limits the demoldable range, and only a small number of molding dies can be mounted on the molding machine. Due to the above-mentioned problems, it was difficult to call it an effective method in practice.

The present invention has been made to solve the above problems, and an object of the present invention is to reduce the quality of a molded product from a horizontal press type pressure casting machine in which a plurality of molded products having different shapes are mixedly mounted. It is to provide a demolding method capable of automatically performing demolding without a die, a demolding device used for the demolding method, and a demolding receiver.

[0007]

In order to achieve the above object, the present invention is a casting that is composed of a split mold that can be split into two parts, and that the split surfaces of the split mold are arranged in a substantially vertical direction. A method for demolding a sanitary ware formed body in which a plurality of forming dies are arranged in a laminated state in a horizontal direction, and one end of the plurality of arranging cast forming dies is pressed by a press device to form a die. Step of releasing one split mold of the casting mold, step of setting the receiving rod receiving the molded body in the molded body to release the molded body from the casting mold, the other split The process of releasing the mold, the process of moving the received Tochi used for demolding to the next process by directly using the received Tochi as the receiving Tochi for transport, to the next process It is characterized by performing. By doing so, efficient demolding can be performed without degrading the quality of the molded body.
In addition, since the receiving tochi used for demolding can be used as it is as the receiving tochi for transportation, it is possible to omit the step of transferring the molded body in the subsequent step, which improves the efficiency of the step and reduces the occurrence of defects during transfer. Connect

In a preferred aspect of the present invention, in the step of setting the receiving body on the receiving surface of the molded body, the molded body is held under reduced pressure in the receiving body. By doing so, the demolding receiving Tochi plays the role of the molded body suction part that is indispensable for demolding the molded body in the horizontal direction, and the transport used when the molded body is transported by the conveyor in the subsequent process. You can play both roles. Furthermore, even when molds with different bottom shapes are mixedly loaded on the same machine, by using the demolding receiving tochi that matches the bottom shape of each molded body, it is possible to respond without replacing the adsorption part each time. It will be possible.

In a preferred embodiment of the present invention, a casting mold which is composed of a split mold which can be split into two and is arranged such that the split surfaces of the split mold are in a substantially vertical direction is laminated in a horizontal direction. A plurality of moving means for moving in parallel with the casting molding device, in which one end of the plurality of casting molds arranged in a row is pressed by a pressing device to perform casting, and the casting device is mounted on the moving means. A receiving Tochi carry-in / carry-out means for carrying in / carrying out the receiving Tochi to / from the space formed after releasing one of the split molds to release the molded product of the working mold, and the moving means is The receiving Tochi used for demolding in the receiving Tochi carry-in / out means is used as it is as the receiving Tochi for transportation, and the receiving Tochi and the molded body held in the receiving Tochi are configured to move. Provided is a demolding device for a sanitary ware molded body. By moving the demolding device in parallel with the casting molding device, the fixed demolding device expands the range of demolding that has a limit, and it is compatible with molding machines equipped with multiple casting molds. It becomes possible.

[0012] In a preferred aspect of the present invention, the receiving and carrying-in means for carrying in and carrying out the receiving and receiving the tochii has a receiving and holding means and rotating means for holding and rotating the receiving tochii. This enables a series of operations in which the demolding receiving tochi is supplied horizontally to the demolding device, rotated 90 degrees, transferred to the demolding position, and returned to the original position together with the molded body after demolding. After the demolding receiving tochi is arranged vertically according to the shape of the molded body receiving surface, it becomes possible to demold horizontally. Moreover, since the strength of each axis can be designed as needed, the limit width of the loadable capacity, which is a problem in a general-purpose robot, becomes wide, and a great effect is obtained especially in demolding a large molded body.

In a preferred aspect of the present invention, the receiving and holding holding and rotating means includes a positioning means for positioning with respect to the casting mold. By doing so, the demolding receiving tochi can be accurately arranged at the adsorbable position without damaging the molded body.

Further, according to the present invention, a plurality of cast molding dies each of which is composed of a split mold which can be divided into two, and which is arranged such that the split surfaces of the split molds are in a substantially vertical direction are horizontally laminated. The sanitary ware molded body is arranged by pressing one end portion of the plurality of arranged casting molds with a pressing device to remove the molded product from the casting mold. A receiving surface portion for receiving a molded body during molding and a decompression space portion behind the receiving surface portion are provided, and a plurality of small holes are formed in the receiving surface portion, and the decompression space portion communicates with each other through the small holes. , The molded body can be held under reduced pressure, and further, the receiving tochi used for demolding is used as it is as the receiving receiving tochi for transportation and mounted on a moving means for moving the receiving tochi and the molded body held in the receiving tochi. This is a receiving mold for sanitary ware molded articles for demolding. By doing so, the molded product can be held by suction, and even in a casting molding apparatus in which molded products with different shapes are mixedly mounted, the part to be sucked and held can be easily removed in the horizontal direction without replacing it according to the shape of the molded product. Can be molded.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a horizontal press type molding machine (casting molding apparatus) A for simultaneously casting and molding a large number of washbasins. A large number of forming dies 2 are movably supported by a forming press frame 4 via a forming die suspension carriage 5. The mold press cylinder 3 is arranged at one end of the molding press frame 4. The mold press cylinder 3 opens and closes the mold 2-1a at one end and presses a large number of molds 2. Molds 2 other than the mold 2-1a
The molds 1b, 2-2a, 2-2b, 2-3a, 2-3b, ... Are opened by moving the forming die suspension carriage 5 by the automatic die opening device 6.

The demolding device 8 is installed in parallel with the horizontal press type molding machine (casting molding device) A as shown in FIG. 2, and is installed on the floor in parallel with the horizontal pressing type molding machine (casting molding device) A. Truck 20 traveling on a traveling rail 20a laid on the road
b, a horizontal press type molding machine (casting molding device) A mounted on the traveling carriage 20b in a direction perpendicular to the traveling direction of the traveling carriage 20b.
On the other hand, the receiving Tochi 21 is configured with the receiving Tochi loading / unloading device 20c for loading / unloading. Tochi carry-in / carry-out device 20
Reference numeral c designates an automatic demolding head portion 14 for supporting the Tochi 21 and a rod for moving a slide base for moving the automatic demolding head portion 14 into and out of the horizontal press molding machine (casting molding machine) A. A pressure cylinder 18 is provided.

FIG. 3 shows a cross-sectional view and a plan view (left half portion) of the demolding receiver Tochi 21. The demolding receiving Tochi 21 is composed of a receiving Tochi base plate 9 for transporting, and a receiving Tochi main body 11 that supports the bottom surface of the molded body 1 (the back side of the washbasin). The receiving Tochi base plate 9 and the receiving Tochi main body 11 are provided. A hollow space (decompression chamber 11a) is provided between them. A pressure reducing communication hole 10 that communicates with the pressure reducing chamber 11a is formed in the receiving Tochi base plate 9, and the molded body 1 of the receiving Tochi main body 11 is formed.
A large number of vacuum suction holes 12, 12, ... Are bored on the surface contacting with, and a seal packing 13 surrounds the periphery thereof.
With these configurations, at the time of demolding, the demolding receiver Tochi 21 is brought into close contact with the bottom surface of the molded product 1 in the molding die, and the molded product 1 can be adsorbed to the demolding receiver Tochi 21 by depressurizing it through the depressurizing communication hole 10. . In addition, the receiving Tochi base plate 9 is also used, and the dedicated receiving body for various types of the receiving Tochi main body 11 alone is attached, and by supplying the pattern-removing receiving Tochi with the required pattern, 1 Even if molds with different shapes are mixedly mounted on the base molding machine, automatic demolding is possible.

Next, the steps from the setting of the demolding receiving tochi 21 to the demolding device 8 to the completion of the automatic demolding will be described with reference to FIGS. 4, 5 and 6 including the functions of the device. 4 is an assembly view of the demolding device 8, FIG. 5 is a partial detailed view of the automatic demolding head portion 14, and FIG. 6 is a process exploded view of the demolding device 8.

The demolding receiving tochi 21 conveyed from the demolding receiving tochi supply / delivery conveyor 35 by an automatic transfer machine (not shown) or the like is set on the automatic demolding head portion 14, and the automatic demolding head portion 14 is set. The demolding receiving tochi 21 provided in the is fixedly held by a clamp 34. (FIG. 6 (a)) At this time, the decompression communication contact pad 32 provided on the automatic demolding head portion 14 and the decompression communication hole 10 of the demolding receiver Tochi 21 are in close contact with each other, and The decompression chamber 11a is connected to a vacuum pump pipe (not shown).

Next, the demolding receiver Tochi 21 is fitted to the molding die 2 9
Rotate 0 degrees. For this purpose, the demolding device 8 is provided with a mechanism capable of rotating the automatic demolding head portion 14 by 90 degrees by a head rotating shaft 15 and a motor 16 with a head rotating speed reducer.

The automatic demolding head portion 14 that clamps the demolding receiving tochi 21 rotated by 90 degrees is connected to a head inserting slide base 17, and these are demolded by a rodless cylinder 18 for moving the sliding base. Insert into the opened mold gap B. In this example, the automatic demolding head portion 14 moves from the back side of the paper surface to the front side and enters the space B between the molding dies. At the time of insertion, the molding die to be released from the casting molding apparatus A side is previously opened by the automatic die opening device 6. There is also a case where the molded body 1 has a pre-inclined shape in the molding die, but in this case, it also has a function of further inclining the demolding receiving tochi 21 by the clamp base rotation shaft 31 after insertion. is doing.

The rotated demolding receiver Tochi 21 is molded by the head pushing air cylinder 22 into the molded body 1 of the molding die 2.
Is pressed against the bottom of the. (FIG. 6C) At this time, the positioning mechanism functions so that the demolding receiving tochi 21 can be pressed to the correct position without scratching the molded body 1.

For positioning, the head pushing base plate 23 is used.
When is pushed out, the positioning male dowel 30 is first inserted into the female dowel 33 provided on the molding die 2. At this time,
If the position is slightly displaced, the positioning male dowel 30 is pushed into the female dowel 33, so that the vertical slide base 2
7. Stress is applied in the direction in which the left and right slide bases 25 are position-corrected. Left and right slide rails for positioning 2
4. The position is corrected while being absorbed by the vertical slide rail 26 for positioning and the floating balance air cylinder 28.

Next, the head extruding base plate 23 is further extruded. At this time, the air pressure of the horizontal extruding positioning air cylinder 29 is gradually released so that the demolding receiving tochi 21 remains in the fixed position. Can be adhered to. The positioning of the demolding receiving tochi 21 is completed by these continuous operations.

After the demolding receiving tochi 21 is brought into close contact with the bottom surface of the molded body 1, the decompression chamber 11a is attached by an attached vacuum pump (not shown).
By depressurizing the inside, the demolding receiver Tochi 21 can adsorb the molded body 1. After the adsorption is completed, the mold 2 is the molded body 1.
Demolding the adsorption surface of. At the same time, the demolding receiver Tochi 21 that has adsorbed the molded body 1 is retracted by the air cylinder 22 for head extrusion, so that the molded body 1 can be separated from the molding die 2. In addition, here, the positioning male dowel 3
Since 0 retreats while pressing against the female dowel 33 by the force of the coil spring, the molded body 1 retreats in the positioned shape as in the case of extrusion and does not cause defects such as scratches.

During the backward movement, the horizontal extrusion positioning cylinder 29 reaches the stroke end, and the positioning male dowel 30 is pulled out from the female dowel 33. After the retreat is completed, it is returned to the original position with the molded body 1 placed on the demolding receiving tochi 21 by the reverse operation of the inserting process. (Fig. 6 (d))

Here, the decompression state of the decompression chamber 11a is released,
An automatic transfer machine (not shown) is used for demolding receiving Tochi 21 and molded body 1.
And are transferred to the demolding receiving and receiving supply conveyor 35 and conveyed to the next step. (Fig. 6 (e))

This is a series of demolding steps, but since the mold demolding position is different in the subsequent demolding of the molded body, the traveling carriage 20a can travel to the designated position by the traveling reduction gear motor 19. ing.

In addition, one of the ordinary casting molds is 1
Although individual molded bodies are molded, small molded bodies may be formed by molding two or more molded bodies from one mold. In this case, the demolding device can be remolded so that two or more demolding receiving tochi can be set in the automatic demolding head, so that two or more molded bodies can be demolded at one time.

[0028]

According to the present invention, since the receiving tochi used for demolding can be used as it is as the receiving tochi for transport, it becomes possible to omit the step of transferring the molded body in the subsequent step,
This will lead to more efficient processes and reduction of defects during transfer.

[Brief description of drawings]

FIG. 1 is a schematic view showing a horizontal press type molding machine (cast molding apparatus) which is an embodiment of the present invention.

FIG. 2 is an installation view of a demolding apparatus showing an embodiment of the present invention.

FIG. 3 is a cross-sectional view (a) and a top view (b) showing one embodiment of the demolding receiving tochi used in the present invention.

FIG. 4 is an assembly diagram of a demolding device according to an embodiment of the present invention.

FIG. 5 is a partial detailed view showing a demolding device head portion which is one embodiment of the present invention.

FIG. 6 is an example of a process exploded view of the demolding apparatus of the present invention.

[Explanation of symbols]

1 ... Molded body 2 ... Mold 3 ... Mold press cylinder 4 Molding machine press frame 5 ... Molding die suspension trolley 6 ... Automatic mold opening device 7 ... Horizontal press molding machine 8 ... Demolding device 9 ... Tochi base plate 10 ... Compression hole for decompression 11 ... Received Tochi main body with decompression chamber 12 Decompression suction hole 13 ... Seal packing 14 ... Automatic demolding head 15 ... Head rotation axis 16 ... Motor with reducer for head rotation 17: Slide base for inserting head 18 ... Rodless cylinder for moving slide base 19 ... Motor with speed reducer for traveling 20a ... Running rail 20b ... Truck 20c ... Receiving Tochi carry-in / carry-out device 21 ... Receiving Tochi for demolding 22 ... Air cylinder for pushing out head 23 ... Head extrusion base plate 24 ... Left and right slide rails for positioning 25 ... Left and right slide base plate 26 ... Vertical slide rails for positioning 27 ... Vertical slide base plate 28 ... Floating balance air cylinder 29 ... Positioning air cylinder for horizontal extrusion 30 ... Male dowel for positioning 31 ... Clamp base rotating shaft 32 ... Contact pad for vacuum suction 33 ... Female Dowel 34 ... Clamp 35 ... Receiving Tochi supply dispensing conveyor for demolding

Claims (6)

(57) [Claims] 1. A plurality of casting molds, which are composed of split molds that can be split into two and are arranged such that the split surfaces of the split molds are in a substantially vertical direction, are arranged in a stacked state in a horizontal direction, and A method of demolding a sanitary ware molded body that is cast-molded by pressing one end of a plurality of cast-molding dies with a press device, a step of releasing one split mold of the cast-molding dies , The above
The above-mentioned molding for releasing the above-mentioned molded product from the casting mold
The step of setting the receiving tochi to receive the body in the molded body, the step of releasing the other split mold, the receiving tochi used for demolding is used as it is as the receiving tochi for transport and held in the receiving tochi and tochi A method for demolding a sanitary ware molded article, characterized in that the step of moving the formed article to the next step is automatically performed in sequence. 2. The method for demolding a sanitary ware molded article according to claim 1, wherein, in the step of setting the Uchitochi into a molded body, the molded body is held under reduced pressure by the Uchitochi. 3. A plurality of casting molds, which are composed of split molds that can be split into two and are arranged such that the split surfaces of the split molds are in a substantially vertical direction, are arranged in a stacked state in the horizontal direction, and the plurality of the casting molds are arranged. A moving means that moves in parallel with the casting molding device that presses one end of the arranged casting mold with a pressing device to perform casting.
Receiving Tochi carrying in and carrying out the receiving Tochi to the space formed after releasing one split mold to release the molded body of the casting mold mounted on the moving means And a carrying-out means, wherein the moving means uses the receiving tochi used for demolding in the receiving-tochi carrying-in and carrying-out means as it is as a receiving tochi for transportation and holds the receiving tochi and the receiving tochi. To move and
A demolding device for a sanitary ware molding characterized by being configured . 4. The demolding device for a sanitary ware molded article according to claim 3, wherein the receiving and carrying-in and carrying-out means includes receiving and holding means for holding and rotating the receiving tochi. 5. The sanitary ware molded article demolding device according to claim 4, wherein the receiving and holding holding and rotating means includes positioning means for positioning with respect to the casting mold. . 6. A plurality of casting molds, which are composed of split molds that can be split into two and are arranged such that the split surfaces of the split molds are in a substantially vertical direction, are arrayed in a stacked state in the horizontal direction, and It is a receiving machine that demolds sanitary ware molded articles that have been cast-molded by pressing one end of a plurality of cast molding dies with a pressing device, and molds when demolding the molded article from the casting mold. A receiving surface portion for receiving a body, and a decompression space portion behind the receiving surface portion, a plurality of small holes are bored in the receiving surface portion, and the decompression space portion communicates through the small holes, and the molded body Can be held under reduced pressure,
Moreover, the received tochi used for demolding is directly used as the received tochi for transportation to move the received tochi and the molded body held in the tochi.
It is equipped with a moving means that allows the sanitary ware molding to be removed from the mold.